[patch] dereferencing ERR_PTR()

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It's possible for __rpc_lookup_create() to return ERR_PTR(-ENOMEM).

Found by smatch static checker.

regards,
dan carpenter

Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>

--- orig/net/sunrpc/rpc_pipe.c	2009-11-10 22:43:11.000000000 +0200
+++ devel/net/sunrpc/rpc_pipe.c	2009-11-10 22:44:19.000000000 +0200
@@ -587,6 +587,8 @@
 	struct dentry *dentry;
 
 	dentry = __rpc_lookup_create(parent, name);
+	if (IS_ERR(dentry))
+		return dentry;
 	if (dentry->d_inode == NULL)
 		return dentry;
 	dput(dentry);
--
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